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Statements

Subject Item
n2:RIV%2F47813059%3A19240%2F14%3A%230005067%21RIV15-MSM-19240___
rdf:type
skos:Concept n13:Vysledek
rdfs:seeAlso
http://acta.astrouw.edu.pl/Vol64/n1/pdf/pap_64_1_4.pdf
dcterms:description
Resonant Switch (RS) model has recently been proposed as an alternative to the standard models of twin-peak high-frequency quasi-periodic oscillations (HF QPOs) observed in low-mass X-ray binaries containing a neutron star. The model assumes switch of twin oscillations at a resonant point, where frequencies of the upper and lower oscillations \nu_U and \nu_L become commensurable and one pair of the oscillating modes (corresponding to a specific model of HF QPOs) changes to some other pair due to non-linear resonant phenomena. We test the RS model for the atoll source 4U 1636–53, where we assume two resonant points observed at frequency ratios \nu_U : \nu_L = 3 : 2, 5 : 4, by fitting the pairs of the oscillatory modes to the observed data in the regions related to the resonant points. Among acceptable variants of the RS model the most promising are those combining the relativistic precession (RP) and the total precession (TP) frequency relations or their modifications. The precision of the fits is shown to be strongly increased in comparison to fits realized by individual pairs along the whole data range. We demonstrate that the \chi^2 test is significantly improved. Fitting of the HF QPO data in the source 4U 1636–53 by the RP1–RP variant of the RS model gives the best results and implies that the neutron star mass and dimensionless spin are M \approx 2.2 M_{Sun} and a \approx 0.27. Resonant Switch (RS) model has recently been proposed as an alternative to the standard models of twin-peak high-frequency quasi-periodic oscillations (HF QPOs) observed in low-mass X-ray binaries containing a neutron star. The model assumes switch of twin oscillations at a resonant point, where frequencies of the upper and lower oscillations \nu_U and \nu_L become commensurable and one pair of the oscillating modes (corresponding to a specific model of HF QPOs) changes to some other pair due to non-linear resonant phenomena. We test the RS model for the atoll source 4U 1636–53, where we assume two resonant points observed at frequency ratios \nu_U : \nu_L = 3 : 2, 5 : 4, by fitting the pairs of the oscillatory modes to the observed data in the regions related to the resonant points. Among acceptable variants of the RS model the most promising are those combining the relativistic precession (RP) and the total precession (TP) frequency relations or their modifications. The precision of the fits is shown to be strongly increased in comparison to fits realized by individual pairs along the whole data range. We demonstrate that the \chi^2 test is significantly improved. Fitting of the HF QPO data in the source 4U 1636–53 by the RP1–RP variant of the RS model gives the best results and implies that the neutron star mass and dimensionless spin are M \approx 2.2 M_{Sun} and a \approx 0.27.
dcterms:title
Test of the Resonant Switch Model by Fitting the Data of Twin-Peak HF QPOs in the Atoll Source 4U 1636–53 Test of the Resonant Switch Model by Fitting the Data of Twin-Peak HF QPOs in the Atoll Source 4U 1636–53
skos:prefLabel
Test of the Resonant Switch Model by Fitting the Data of Twin-Peak HF QPOs in the Atoll Source 4U 1636–53 Test of the Resonant Switch Model by Fitting the Data of Twin-Peak HF QPOs in the Atoll Source 4U 1636–53
skos:notation
RIV/47813059:19240/14:#0005067!RIV15-MSM-19240___
n3:aktivita
n4:S n4:P n4:I
n3:aktivity
I, P(EE2.3.20.0071), P(GB14-37086G), S
n3:cisloPeriodika
1
n3:dodaniDat
n19:2015
n3:domaciTvurceVysledku
n9:7083181 n9:5038901 n9:5821754 n9:1183745
n3:druhVysledku
n8:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
50026
n3:idVysledku
RIV/47813059:19240/14:#0005067
n3:jazykVysledku
n17:eng
n3:klicovaSlova
accretion, accretion disks; stars: neutron; X-rays: binaries
n3:klicoveSlovo
n15:X-rays%3A%20binaries n15:stars%3A%20neutron n15:accretion%20disks n15:accretion
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[865398D55C6C]
n3:nazevZdroje
Acta Astronomica
n3:obor
n7:BN
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n6:GB14-37086G n6:EE2.3.20.0071
n3:rokUplatneniVysledku
n19:2014
n3:svazekPeriodika
64
n3:tvurceVysledku
Kotrlová, Andrea Stuchlík, Zdeněk Goluchová, Kateřina Török, Gabriel
n3:wos
000335538700004
s:issn
0001-5237
s:numberOfPages
20
n16:organizacniJednotka
19240